Process and device for supplying heated humidified air



March 26, 1935. R. W. DE LANCEY ET AL 1,995,341

PROCESS AND DEVICE FOR SUPPLYING HEATED HUMIDIFIED AIR Filed Aug. 24,1933 2 Sheets-Sheet 1 57771157)? AVTO/WVEYE.

March 26, 1935.

PROCESS AND DEVICE FOR SUPPLYING HEATED HUMIDIFIED AIR R. W. DE LANCEYET AL Filed Aug. 24, 1955 2 Sheets-Sheet 2 Patented Mar. 26, 1935 s I Ii UNITED STATES sersarorsics Ralph W. De Lancey and James H.ltothenberge'r, La Crosse, Wis, assignors to Par Appliances, Ina, LaGrosse, Wis, a corporation of Min:

1 Application August 24, 1933; Serial No. 686,572

' 3 Claims. c1.122 155) This invention relates to processes and devicescentric with the outlet 8. The conduit 10 is confor supplying heatedhumidified air. I nected to an inlet 13 at the forward side of the It isthe general object of the invention to drum near its upper end, and thisconduit serves provide a novel and improved humidifying procto supportthe forward portionof the drum with- 5 ess whereby humidified air at arelativelyhigh in, the casing 6. The drum 11 isequipped with 5temperature may be supplied to a space to be an outlet 14 at its rearside adjacentits upper both humidified and heated. end; preferably "indiametrically opposed rela- Another object is to'provide a novel and im-'tion from the inlet- 13. The outlet 14 runs proved device of cheap andsimple construction, through an opening inthe rear of the casing 6 10which can be effectively utilized for supplying and, in practice thisoutlet will be connected up 10 out the various views, and, in which,

heated and humidified air. to a smoke flue or chimney (not illustrated).

A further object is to provide a novel'and 'im- Theoutlet 14 supportstherear part of the drum proved steam boiler, which can be utilized with11 from the casing 6. The inner and outer walls the utmost eii'iciencyto generate steam. of the drum are spaced from each other to pro- 15 Theobjects and advantages of the invention videa heatin h m rl5 d the pr of15 will more fully appear from the following decombustion are bafiled bymeans of bafile plates scription, made in connection with the accom- 16within the chamber 15, so that the products of panying drawings, whereinlike reference charcombustion will have a long travel between the actersrefer to the same or similar parts throughinlet 13 and the outlet 14 togive lp a great p tion of their heat to the air surrounding the drum 11Fig. 1 is a view in front elevation of a device a d to t e air Withinthe air pas The embodying the-invention; bafiles 16 preferably areinterposed about mid- Fig. 2 is a view taken partly in side elevationWay between the front and rear portions of the and partly in verticallongitudinal section drum so as to extend between the outer andinthrough the device, certain of the parts being not walls of the drumand these bafiies run from 2; broken away to more clearly show theconstructhe t l of the drum downwardly t points p c tion thereof; iupwardly somewhat from the bottom of the Fig. 3 is a view partly in sideelevation and drum. With this arrangement, it 'will be seen partly invertical section of the inner shell of that e pr u s of combustionentering the the boiler; drum through the inlet 13 will be divided tomove 30 Fig. 4 is a horizontal section taken on the line arcuately thr ue heating Chamber fi 44 of Fig. 3, as indicated by the arrows; anddownwardly below the baffles 16 and thence up- Fig. -5 is a horizontalsection taken onthe' line 'wardly to the outlet 14. 5-5 of Fig. 3, asindicated by th arrow Connected to the steam space at the upper end 05In accordance with the invention, there is of the boiler A is a steam ppe 17 which runs '3' provided a casing 6 preferably of rectangular fi stup y d then y to Connect shape in cross section and having preferably atwith a steam distributing head 18 of substantialits'rear near its'lowerend a cold air inlet '7. At 1y ring-Shape. This head is preferably leate l the top of the casing 6 preferably spaced someim e at y a ve thepassage 12 in the drum 0 what forwardly from the rear'side of the casingand below the outlet 8 and the head is provided there is provided a warmair outlet 8 commuwith a plurality of pe r 1 r h nicating with an airconduit 9 adapted to convey which the steam running t t e e d y eheated, moistened air to the room or chamber auSt up ly into theeiriwithin the casing tobe heated and humidified. Mounted within Theboiler A is best illustratedin Figs. 2, 3, 4

the casing 6 and closing the lower-forward pcrand 5. The boiler includesa lower section 19 45 tion of the casing is a water boiler which may behaving a front opening closed by a removable designated as an entiretyby the letter A. This plate 20 through an opening in which an oil boileris of special construction hereinafter more burner (not illustrated) maybe inserted within fully described. From the upper central porthesection. The upper pa t of he e O tion of the boiler A a conduit 10 forconveying 19 is double walled to provide alower' water cham 50 off theproducts of'combustion after they have ber 21, th inner W f W h formsthe fi p passed through the boiler, runs to an annular of the boiler. ovly g the top of the lower drum 11 disposed within the casing 6. Thisdrum tion 19 and extending well above the same are 11 is preferably ofcylindrical shape as shown inner end outer shell sections or shells 22and 23 r to provide a central vertical air passage 12 conrespectively,'Whioh' o h a chamber 24 6i flange and in the upper wall of the lowersec-' tion 19 afford communication between the chamber 21 and thechamber 24. The shell 23 is'of general cylindrical shape and it has aninturned flange at its upper. end connected to a flange 29 of the innershell 22. The inner shell 22. is of quite peculiar shape and it may beconsideredto comprise a lower part 30 of generally regular polygonalshape having vertical outer walls connected together by channel-likeribs 31. These ribs 31 project much farther inwardly at their lower endsthan at their upper ends and the inner edges of the ribs extend fromtheir lower ends diagonally upwardly and outwardly to connect with acircular flange 32 at the top of the lower part of the inner shell. Inthe particular embodiment shown, sevenribs are provided although it willbe understood that any desired'number of ribs may be used if desired Theinner shell 22 may be also considered to include an upper part 33 whichis also of regular polygonal shape in genera1 exterior contour but ofconsiderably smaller size than the lower part 30. The upper part 33joins the inner edge of the flange 32 and the exterior walls of theupper part are vertical. The exterior walls are connectedby means of aplurality of inwardly extending ribs 34 of general channel'shape incross section. These ribs3i join the inner edge of the flange 32 and rundiagonally upwardly and inwardly as best shown in Fig. 3, to connect attheir upper ends with the flange 29. It should behere noted that theribs 31 of the lower part 30 do not aline with the ribs 34 of the upperpart 33. In other words, the ribs 34-. are staggered relative to theribs 31. The inner surfaces of the inner shell 22 may be considered todefine a space for the travel of the products of combustion which issimilar to that formed by two ribbed truncated pyramids having theirlarger bases in abutment.

The flange 29 is provided with an upstanding ring 35 which connects withthe conduit 10.

It will be seen that the boiler A is provided through the medium of theinner shell 22 with an exceedingly large surface area in direct contactwithth'e heated products of combustion, Accordingly, the water withinthe chamber 24 will be very quickly heated to generate steam in theupper part of the chamber. To supply water to the chamber 24and tomaintain the water in the chamber at a constant level, there is provideda water inlet conduit 36 provided with a chamber 37 having mountedtherein a float valve 38 of standard construction and not illustrated indetail. I I

When the deviceis set in operation} the products of combustion from theboiler after passing through the same to heat the water in the chamber24 and generate steam therein, will run through the conduit 10 into thedrum 11 to heat the air surrounding the drum and the air in the airpassage 12. Cool air'will be admitted to the casing 6 through the inlet'7 and will pass upwardly around the drum 11 and through the air passage12 to a point over the drum. The steam generated in the chamber 24 willpass through the steam conduit 17 into the steam head 18 from whence itwill be discharged through the apertures 18a. This steam will mix withthe heated air above the drum 11 to cause this air to be thoroughlymoistened. Due to the fact that the air is heated before the steam ismixed with the same, the air more readily absorbs the moisture from thesteam to prevent the formation of fog. The heated and moistened air willthen pass through the outlet 8 to be conveyed by the conduit 9 to theroom or chamber to be'heated and humidified;

It will be seen that the one unit will supply both heated and humidifiedair. Practically all the heat is utilized to heat the air within thecasing 6 and the device is accordingly mostefflcient in tiallycylindrical shape and having an upper wall joining the upper edge of theinner shell, said inner shell being ribbed from bottom to top to definean inner open space produced by applying two truncated ribbed pyramidswith their larger bases in abutment.- I i 2. A water boiler comprising acombustion chamber and an outer andan inner shell above said combustionchamber, said outer shell being substantially cylindrical inshape andhaving an upper end joining the upper edge of the inner shell, saidinner shell having a lower substantially cylindrical portion-and anuppersubstantially cylindricalportion of smaller size than the lower portion,said lower portionhaving a plurality of inwardly projectingribs formedtherein; said ribs projecting diagonally upwardly and outwardly fromtheir lower ends, said upper portion also having a plurality of ribsformed therein, said ribs projecting upwardly and inwardlyfrom theirlower ends. 7 V

3. The structure defined in claim 2, the ribs of said upper portionbeingcircumferentially stag geredrelative to the ribs of said lower portion.

RALPH W. DE LnNonY. JAMES H. ROTHENBERGER.

